wiki improved a bit

[Yoshinori K. Okuji]

I've filled up more info in the wiki:

http://www.autistici.org/grub/

I will add more articles later. I have already written a lot about the 
internals in Japanese, but I must translate them to English, since I 
may not expect that many people start to study Japanese for GRUB. ;)

To bug-grub: I don't think there is much interest in this wiki as for 
GRUB Legacy, since the development is not active any longer. But if 
anyone wants to have a wiki space for GRUB Legacy, feel free to add 
text to it. To avoid name conflicts, always use GrubLegacy as a prefix 
if you make any new wiki tags for GRUB Legacy.

Okuji